Tyler Apiaries sells bees and beekeeping supplies. Bees (including a queen) are shipped in special packages according to weight. The target weight of a package is 1.8kg. Historically, Tyler's shipments have weighed on average 1.8kg, with a standard deviation of 0.12kg. a. The lower and upper tolerance limits are 1.7kg and 1.9kg, respectively. The process capability ratio is (Enter your response rounded to three decimal places.)